MLB's one-pitch aces
Like Mariano Rivera, these hurlers are dominating with only one offering
Rivera has been a rare exception in employing a one-pitch arsenal. Since the beginning of the 2008 season, just 3.3 percent of pitchers and less than 1 percent of starters -- all but one of them knuckleballers -- have thrown a single pitch more than 80 percent of the time over the course of a season. Clearly, pitchers who can survive the big leagues relying primarily on one pitch are exceedingly rare.
However, this year we have seen two pitchers emerge in the Rivera mold -- non-knuckleballers dominating with the use of just one pitch. Here's how they are doing it.
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